Comparative study of dislocation density characterizations on silicon
Sign Up to like & getrecommendations! Published in 2017 at "Crystal Research and Technology"
DOI: 10.1002/crat.201600224
Abstract: During production of silicon ingots for photovoltaic application, defects are created inside the crystal. Among these defects which impact photovoltaic efficiency, there are dislocations, linear defects mainly due to thermal stresses during ingot processing. Characterization… read more here.
Keywords: study dislocation; dislocation density; comparative study; dislocation ... See more keywords
The influence of artificial aging on the microstructure and hardness of an Al–Zn–Mg–Zr alloy processed by equal-channel angular pressing
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Materials Science"
DOI: 10.1007/s10853-019-03646-x
Abstract: The effect of artificial aging on the microstructure and hardness of an ultrafine-grained (UFG) Al–4.8%Zn–1.2%Mg–0.14%Zr (wt%) alloy was studied. The UFG microstructure with an average grain size of about 260 nm was obtained by severe plastic… read more here.
Keywords: aging microstructure; dislocation density; artificial aging;
A dislocation density-based model for the work hardening and softening behaviors upon stress reversal
Sign Up to like & getrecommendations! Published in 2021 at "Archives of Civil and Mechanical Engineering"
DOI: 10.1007/s43452-021-00239-x
Abstract: The mechanical behaviours of microalloyed and low-carbon steels under strain reversal were modelled based on the average dislocation density taking into account its allocation between the cell walls and cell interiors. The proposed model reflects… read more here.
Keywords: reversal; dislocation density; dislocation; model ... See more keywords
In situ high energy X-ray diffraction measurement of strain and dislocation density ahead of crack tips grown in hydrogen
Sign Up to like & getrecommendations! Published in 2019 at "Acta Materialia"
DOI: 10.1016/j.actamat.2019.09.020
Abstract: Abstract The deformation fields near fatigue crack tips grown in hydrogen and in air were measured using high-energy x-ray diffraction. A larger magnitude of elastic strain was observed in the hydrogen case compared to the… read more here.
Keywords: ahead crack; dislocation density; hydrogen; dislocation ... See more keywords
An experimentally validated dislocation density based computational framework for predicting microstructural evolution in cold spray process
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Solids and Structures"
DOI: 10.1016/j.ijsolstr.2021.111065
Abstract: Abstract We present an experimentally validated computational model for microstructural evolution in the cold spray additive manufacturing process of Al6061 alloy coating. The microstructural characteristics are determined with a dislocation density-based model that is shown… read more here.
Keywords: dislocation density; process; microstructural evolution; cold spray ... See more keywords
Dislocation density based model for Al-Cu-Mg alloy during quenching with considering the quench-induced precipitates
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2018.01.135
Abstract: Abstract The accurate prediction of residual stress for as-quenched Al-Cu-Mg alloy requires profound knowledge on the materials' constitutive behavior. In present work, the flow stress of as-quenched Al-Cu-Mg alloy is modelled using a dislocation density… read more here.
Keywords: alloy; dislocation density; model; density based ... See more keywords
Al3(Sc, Zr) precipitation in deformed Al-Mg-Mn-Sc-Zr alloy: Effect of annealing temperature and dislocation density
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2020.154856
Abstract: Abstract The changes of Al3(Sc, Zr) morphology in deformed Al-Mg-Mn-Sc-Zr alloy were studied. Two experiment conditions were designed: different temperature and different dislocation density. Different dislocation density was obtained by different deformation method (traditional hot… read more here.
Keywords: dislocation density; temperature; deformed alloy; al3 precipitation ... See more keywords
Extraction of stress and dislocation density using in-situ curvature measurements for AlGaN and GaN on silicon growth
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Crystal Growth"
DOI: 10.1016/j.jcrysgro.2019.04.014
Abstract: Abstract We have analyzed the in-situ measurements of bow and reflectance during growth of GaN on silicon layers for HEMT based devices, varying the quality of the layers by changing the AlN nucleation layer. By… read more here.
Keywords: stress; growth; gan silicon; dislocation density ... See more keywords
Modeling the microstructure evolution in AZ31 magnesium alloys during hot rolling
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Materials Processing Technology"
DOI: 10.1016/j.jmatprotec.2018.01.025
Abstract: Abstract A new model was proposed based on the dislocation density of the computer simulation of the microstructure evolution in magnesium alloys. It is possible to describe the continuous dynamic recrystallization (CDRX) interaction including work-hardening,… read more here.
Keywords: microstructure evolution; dislocation density; microstructure;
A dislocation density-based continuum model of the anisotropic shock response of single crystal α-cyclotrimethylene trinitramine
Sign Up to like & getrecommendations! Published in 2017 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2016.09.005
Abstract: Abstract We have developed a model for the finite deformation thermomechanical response of α -cyclotrimethylene trinitramine (RDX). Our model accounts for nonlinear thermoelastic lattice deformation through a free energy-based equation of state developed by Cawkwell… read more here.
Keywords: dislocation density; response; dislocation; cyclotrimethylene trinitramine ... See more keywords
Martensite tempering kinetics: Effects of dislocation density and heating rates
Sign Up to like & getrecommendations! Published in 2020 at "Materials Characterization"
DOI: 10.1016/j.matchar.2020.110564
Abstract: Abstract In this study, the combined effect of dislocation density and rapid thermal cycling on the tempering kinetics of fully martensitic steel has been investigated by straining the sheets to different deformation levels. It was… read more here.
Keywords: tempering kinetics; martensite tempering; dislocation density; kinetics effects ... See more keywords